I do disagree that CRTs are superior for gaming compared to LCDs. Yes they were at one point in time, when the response time was 25+ ms. However since then the technology has come along quite nicely and the speeds are as high as 2 ms. Keeping in mind that is grey to grey or something like that. Anyways, I recently had a BenQ 19" LCD that was probably 16ms or higher and yes the ghosting was noticable although it didn't take me long to get used to it. Currently though I'm running a nice 21" Samsung 214T LCD display which has a response of 8ms. I can't make out ghosting at all, and I'd have trouble seeing a comparable CRT offering sitting on my desk with the space it would take up. Nice crisp and clear colors running at 1600 x 1200 resolution. I think I'll continue to stand by LCDs.
Comparing prices, yes a CRT will cost less than the comparable LCD. However as with most things, you get what you are willing to pay for.
As for hardware components. Before my last upgrade my desktop system was running a P4 2.4GHz, 1GB Ram, and an ATI 9600 Pro AGP video card. This stuff was all purchased at the beginning of the fourth quarter of 2002. I could run Guild Wars at 1280 x 1024 (The BenQ 19") with all the settings turned up high with no issues at all. So yes, Guild Wars doesn't require anything that would be considered high end these days to run with awesome performance.
Personal preference: Build a system to spec what you want. However I don't think it likely you'd be at that stage. If you happen to be Canadian and would like assistance from people in the know to spec out a system that fits your needs you could visit
www.ncix.com. Great place, love the prices and I've never had a bad experience with them. Else you could easily go out to the local store and purchase a brand name system, just be sure to avoid "Onboard Video" (Video card built into the Motherboard). A lot of brand name manufacturers do prefer that, or at least the last time I ever looked at a brand name computer (which has been quite a while now).
Additional NCIX info: They will build and test any system that you spec out, however that of course adds to the price tag. The forums are a great place to get help speccing a system to fit needs and budget.