Reloading for the 9mm isn't that expensive if you have a press.
Dies and shellplate will run you 50 to $90. I taper crimp all Auto Pistols and a taper crimp die would be included in the $90 range.
If you search, you can find brass dirt cheap (or use what you have). I was able to find 6k pieces of 9mm brass for $100 shipped. I lucked out and took the deal as soon as I saw it. Worked out to 2.5k F.C., 2k Winchester & 1k R-P (there was .5k of other headstaps that will still be in my rotation, but may give a buddy who also wants to reload 9mm).
Bullet choice is going to be where you will spend the most as Powder ($0.009 assuming HP-38/W231 purchased from PV in 8lb jugs and a charge of roughly 4.5gr) and Primer ($0.025 assuming SPP purchased in bulk) are almost insignficant).
If you shoot lead, then I would suggest MBC's SmallBall (.356 125gr LRN)
or MBC's Parabellum (.356 115gr LRN)
If you're going to shoot FMJ or JHP, give Precision Delta
FMJ or JHP will run you about $0.08 to $0.09 per bullet. Lead will run you about $0.06 to $0.07 per bullet. This is obviously the bulk of your reloading costs.