Political Memes

A 9mm handgun can be as cheap as $100, however that is for a quite poor quality gun (hipoint). For something that is more standard, higher quality handgun like the Glock 19 is around $500.

There are some additional fees, if you buy online you have to have it shipped to an FFA which may charge you, in my state, you either need a conceal carry permit, or a 'pistol purchase permit' the conceal carry is like a lifetime pass to buy guns, with the idea being you proved you can be safe by doing the CCW courses and exams. The pistol purchase permit is like $15 and involves a background check.

Private sales require no ancillary permits or anything, so a used hi point 9mm could probably realistically be as low as $50-$75 if it were quite beat up.

A box of ammo for a 9mm may cost around $20 for 20 bullets depending on where you live and such.

That seems cheap and it is. But for regular use at a shooting range for example, a single box would only last a couple a minutes. If you wanted to go for an 'all day' thing at the range, it would cost $100-$200 (about 200 rounds) plus the fees for the range, $20 - $100 depending on the place, unless you have safe private property. Though with a hi point, it will probably fall apart before you get 200 rounds through it 😅.

Things do get real expensive though for people like shooting as a hobby, as more exotic ammo can get very expensive ($10-$15 a bullet or even higher)