1999 Saturn SL1 transmission cost

First of all thank you so much for your donation.I have only had to rebuild a handful of transmission's on the saturn S model.There really good transmission's so let's start with what problem your having with your transmission.Then i can tell you the best way to repair it.

It shifts roughly between 1st and second gear, and it slips in and out of third gear

So you have a hard shift between first and second?It also slip's in and out of third?When you say it slip's in and out of third doe's it shift to a lower gear?Or does it just freewheel?Also do you have any code's?If you don't know could you please go to a auto part's store and see what code's you have and let me know what the number's are.