The 642 or 442 are great revolvers and can be bought for around 360 dollars. They are thicker than most thin flat autos autos and longer too. If a 380 is wanted look at the taurus tcp380 line. Price runs from 185 to 260 depending of steel or stainless steel one or two mags. They are a little bigger than the ruger lcp and kt versions and feed ammo better with the lastest update and have better sights! and a trigger to make most any other handgun look bad at a uber smooth 4.5lbs . Really do. Good one handed shooterl too.
A couple 9mm pistols that can do both pocket or iwb are the kt pf-9 along with the lastest diamond back db9, very small very lite at 12 and 10oz for the two pistols and they iwb easily. Not fun to shoot or control well for some.
The kahr cm9 or 40 can be pocketed many times or iwb very well. IWB handguns that can be tucked in, kt p11 is a 10 shot double stack that can use a sw model 59 mag as back up ,thats an extra 15 shoots and weights 14 oz but is easier to shoot haveing a wider grip. Kahr cw/p9, 40 or 45. and like sized sw shield 9 or 40 along with the nano 9mm all conceal iwb very well and cover tucked in. Beyound these weight, size and cost start to climb. All of these price between 185 to just under 400 dollars with most between 250 and 375.
I carried a taurus 85 revolver for 20 years and will never cc one again with all the great small lite and thin pistols out there today.