Bought mine in 2008, used, for $250. Great piece, and was my EDC for two years. Never had an issue with it I didn't like. When I got it, I proofed it with all kinds of ammo, frequently mixed together in the magazine. Some was new, and some was nearly 20 years old. Some was brass-cased; some was aluminum-cased. There were FMJs, HPs, and Silvertips among the bunch.
I could not make that gun malfunction.
Only stopped carrying it regularly because I came across a Kel-Tec PF9. The PF9 is easier to carry, and a lot less pleasant to shoot. But, I still enjoy owning the Thunder and, if I were ever to lose the Kel-Tec (such as in a shooting incident confiscation or in a theft), the Thunder would go right back to daily carry duty with no qualms whatsoever.