I realize I'm probably in the minority here, but weight is unbelievably important to me. At 41, I have arthritis in both shoulders and Thoracic Outlet Syndrome and just can't tolerate the weight of a heavy guitar. I have way more physical issues than most, but I can't be alone in the importance of weight. If a dealer doesn't list the weight, I move on. The closest dealer to me with more than a 5-6 guitar inventory is 90 minutes away. I emailed them asking about weight and explained the circumstance and that I didn't want to drive out there (that drive will leave me sore for a week) without knowing the hollowbody Mira's he had in stock were sub 6.5 lbs and the dealer told me they "didn't know".
Now I am looking online, but have never purchased a guitar without playing it first, so I am a bit freaked out. Neck shape plays a big role in comfort and not trying first is iffy to me.
I know that weight can be an issue but at some point, the weight becomes less and less an issue. Your limit for example maybe 7lb and as long as a guitar is less than that, it doesn't really matter. If a model varies between 6.5lb to 7.5lb, the it become important to know which ones are under that 7lb limit and any model that comes in 8lb or over doesn't matter what weight they are because its too heavy for your limit. If your limit is 7lb, it doesn't matter how heavy each Hollowbody ii is if they are all under 6lb because they are all under your limit that you can cope with. If 7lb is the maximum limit for you, would you use the weight of the Hollowbody guitars you can find if they are all under 6lb? Would you go for the lightest or the one that you think looks and/or sounds the best?
That's what I meant by my comment. There has to be a point where the weight doesn't really matter because they are all under or all over the limit that you can cope with. I can totally understand if a particular model you want can be above your limit but also under as well - then it matters so you can find a guitar that is under your limit, one that will be comfortable for you to play. If your limit is 7lb for example, then it doesn't matter how heavy a 509 is if they are all over 8.5lb - you aren't going to buy one regardless. A guitar like a Les Paul could vary from say 7.5lb up to over 12lb - especially with weight relieved models so I can understand if your limit is 8-8.5lbs at the most wanting to find a guitar under that weight limit.
If my weight limit was 9lb for example - I don't tend to stand when I play and I have health issues too so I am aware of how things like this can have an impact - I even buy padded thick straps for a reason - but my health is not something I will go into and its also not the topic here - I wouldn't care less if a guitar varies from 7-8lb, I wouldn't go out of my way to find the one closest to 7lb and dismiss every guitar that is over 7.5lb, all guitars are under my limit. If I can play my heaviest guitar comfortably and say its 8.5lb, I certainly won't care if I find the guitar I like the most, sounds the best but is much closer to 8lb than all the others - its still lighter than my limit, lighter than the heaviest guitar I can comfortably play etc.
My most recent purchase, my Special 22 semi-hollow is perhaps the heaviest Special 22 Semi-hollow I saw whilst looking for one for months.
However, its still one of my lightest guitars. Obviously my Hollowbody ii is the lightest but I do have a 509 and a solid, albeit Double cut (so generally on the lighter side compared to the SC versions) 594 which has a thicker body than my Custom 24. I think my 509 is the heaviest (I don't have the weight or some way to accurately weigh but if I can play my 509 for as long as I need without the weight being an issue, then anything that is lighter is not going to be a problem. If my 509 is 9lb, then it really doesn't matter that my Special is one of the heaviest, it happened to be the one that I loved the look and colour of the most and could order it. All that mattered was that it was lighter than my 509 - and my limit is perhaps higher than some because I don't play standing up, don't gig etc so the weight is predominantly on my lap.
I don't know the weight of the guitar that you can comfortably play but, if that guitar is 8lb for example, then all that matters in terms of weight is the guitar is less than or equal to 8lb - and preferably under that limit. If you ask the retailer and they say a guitar is around 7lb for example, it doesn't matter ifs 2 or 3 ounces over 7lb because its still lighter than your limit.
I still think though that weight only matters if you have a limit and that particular model can be above as well as below your limit. If every guitar in a specific model is under that limit, it doesn't matter if the retailer provides an accurate weight. If every guitar is above your limit, then it doesn't matter if a retailer provides a weight because you won't be buying it regardless.