Sorry, thread drift coming in this post.
I think as long as you perform some maintenance on your gun (clean it, lube it where you're supposed to), and the gun was good in the first place, you're ok.
I have recently bought 2 guns from CDI Sales, both cheapos. CZ 75 made in '89, and a CZ99 (Zastava, not the Czech CZ) from around the same time period. Both seem to be Israeli surplus trade-ins. The CZ 75 is all steel with a paint job (I understand that they parkerized before painting); the CZ99 has a blued steel slide, chromed barrel, and alloy frame with some sort of paint on it.
The guns were both "ugly gun specials", all numbered parts were matches, they smelled like dirty engine oil, and they looked as though they were stored in a sand pit that was used to burn trash.
They also shot to point of aim, as well as I could with any other pistol I own.
To clean and lube them, I used 3 chemicals, based on what I learned online (and YMMV).
1) removed the grips (only things not metal), and sprayed them out with a can of non-chlorinated brake cleaner. Amazing the amount of crud that ran free, and the guns looked clean afterwards. I'd seen this recommended in many forums, and the only warning has been "don't get it on plastic". Didn't hurt the finishes at all.
2) Cleaned as normal afterwards with Ballistol, and rubbed everything down with that. Seemed to slick and shine everything up. I use that because they claim it's non-toxic, and Hickok45 likes it.
3) Rubbed a film of Mobil 1 Synthetic Grease on the rails, and other visual sliding surfaces. Really, really smoothed things up. Slides feel lighter, they glide. I've read at bobistheoilguy that this grease and Lubriplate are great for rails, and I couldn't find the lubriplate at my auto parts store. It's worked great on my pistols, and if/when I ever run out of the 14 oz tube, I might try the other brand.
4) another quick wipedown of the outside with ballistol on a rag, and then I tucked the pistols into ... cheap cigar boxes.
Re the cigar boxes- I liked the size, and actually went as far as emailing some PhD of Wood (honestly, something along those lines!) at University of Oregon.
He replied back that the cigar boxes are made of a certain type of cedar, and the wood actually dries the atmosphere out. He said cigar owners have to keep them humidified, or they become bone-dry... and if I wanted to use them for dry storage, then leave them inside (in the AC), open for a few days, and they will balance out to the atmosphere in the house. Which I have done.. and I find the guns I've placed inside remain as nice as I put them in.