You better jump on the Bulgarian Makarovs. Some of the retailers like Sportsman's Guide are scraping the bottom of the barrel and the guns are a little rough and come without accessories. If you hurry and pay more ($300-ish), you might be able to find one in unissued condition with the logbook, spare mag, holster, and original grips.
Police surplus .40 cals are hot. Glocks are widely available, M&P's are widely available, older S&W's are somewhat available, and Sigs are a little harder to find and vary more in price. HK USP40's can also be found here and there. Occasionally you might find some .357 Sig or.45 GAP models.
Spanish 1916 Mausers recently came in. The .308 ones are of arguable safety, though, and I don't find 7x57 a compelling caliber.
AR15's and accessories are cheap. If you want one, now would be a fine time to buy.
Ruger LCP's are $200-ish. You can do a lot worse for a pocket .380.
AK mags are also cheap.