That depends on what you print. If you make a PT92 frame, you can buy everything else...slide, barrel, grips, springs, slide bar, trigger, magazines off of eBay. However, it will probably cost as much (or more) than a used pistol. And that's without he cost of the printer. Most of the stuff on eBay right now is about double the price it should be. I've purchased these parts kits for $35 and slide/barrel assemblies for $150.
A note on Gun Broker and other auction sites...don't buy "high capacity" magazines in ads that don't say what he capacity is. I've seen 12 round PT92 mags listed as "high capacity". And if you really want to pay it, there are people who will be asking $85 for a safety.
The two parts ads below total $320 without a magazine, and you can buy a used PT92 with two or three mags for $350 or less.
https://www.ebay.com/itm/TAURUS-PT9...070281?hash=item1ca28a8109:g:kOIAAOSwSFZakgAq
https://www.ebay.com/itm/Taurus-PT9...007576?hash=item1ca38cf258:g:wRYAAOSwXMtanpLj