PSA Dagger (Glock Clone) - There's usually models available for these prices-- around $300 for base gun, a bit more for different sizes and features (optics cuts and threaded barrel, for example), as well as kits with extra mags and/or cases.
Taurus - They've had a bad reputation (for good reason), but their recent models (G2x, G3x, GX4, and TX22) are supposed to be good, especially for the price. Do your own research.
Handguns
PSA Dagger (Glock Clone) - There's usually models available for these prices-- around $300 for base gun, a bit more for different sizes and features (optics cuts and threaded barrel, for example), as well as kits with extra mags and/or cases.
$299.99
$369.99 with range bag and 10 mags
$409.99 Full size with optics cuts, threaded barrel, 10 mags, and range bag
https://palmettostatearmory.com/s-w-m-p-shield-2-0-9mm-no-safety-black-11808.html
$299.99 - S&W M&P Shield 2.0
https://www.sportsmansoutdoorsuperstore.com/products2.cfm/ID/281522
$399.99 Glock 17 Gen4 Police trade-in
Taurus - They've had a bad reputation (for good reason), but their recent models (G2x, G3x, GX4, and TX22) are supposed to be good, especially for the price. Do your own research.
$237.66 GX4 Micro Compact 9mm - Micro compacts in 9mm can be pretty hard to shoot, fyi.
$190.59 G3C
$219.99 G3
https://www.kygunco.com/product/cz-usa-95132-qp-only-usa-p-10-c-9mm-3-15rd-mags-blk-3-dot-ns
$419.99 CZ P10C
$50 rebate
https://www.shoot-straight.com/product/cz-75-b-omega-16rd-semi-auto-pistol-9mm/
$549.00 CZ 75B
https://old.reddit.com/r/gundeals/comments/zb2adn/handgun_steyr_m9a2_mf_9mm_luger_4_171_40799/
$408 Steyr M9-A2
I don't know anything about this handgun, so I linked the discussion thread. Most of the comments seem positive.
https://www.familyfirearms.com/product/glock-pa195s203-g19-gen5-9mm-luger-4.02-151-black
$494.99 Glock 19 Gen 5
https://www.familyfirearms.com/product/glock-px4350201-g43x-9mm-luger-3.41-101-black-black-ndlc-slide-black-polymer-grip
$412.96 Glock 43X