thanks guys! I'm pretty content keeping mine. I haven't been paying attention to it's aftermarket value but $500 is pretty crazy, though not unheard of in the poster/print world. I do think it's the best ALIENS screen print to date and don't see it being toppped anytime soon. It covers all the imagery I love from the film and I really loved the green when I saw both versions so I knew I had to have the variant in this case. The metallics really pop on this too, but are rather difficult to capture on camera. I'd imagine the blue pops as well but I haven't seen it in person. I kind of think the green should've been the regular and the blue the variant, but what do I know.
I'm planning on moving into a bigger place next year and will have more room to hang artwork so this will be one of a handful of pieces I look forward to framing. As you mentioned framing is pretty costly though and I tend to get pretty creative with my frame-ups (got some cool ideas for this one) so it's a huge expense that often eclipses the print value. Could be a while before I get to it as a result.