I'm in NC, and ordered my clip from Venus. I paid $2100 for the clip and $550 to ship it from Cali. I would not recommend Venus (because my motor was crap and I received very little to no help), or having it shipped from Cali (because it's hella expensive). I highly recommend being able to put your hands on the motor before buying it, and making sure they ship exactly what you agreed to. Take someone with you who's purchased a SR clip, of possible, but definitely look at it in person. Hell, pick it up if you can.
I didn't listen to this advice and regret it heavily. Now I'm $3,000 deep into an engine rebuild and wish I had taken this advice. If you want personal recommendations, PM me.
Best of luck, and please don't cheap out! I ended up only saving ~$500 getting a clip from a less-reputable supplier, and have spent that 6 times over rebuilding my motor.
You can find a decent motor for less assuming you know exactly what's being offered, and what else you need to have the motor running in the particular chassis you've chosen. By far the easiest thing to do is get a motorset from a reputable supplier. I would even go as far as to recommend a clip if you have the facilities to deal with it. Being able to compare the clip to your car is a good tool, especially if you've never done the swap before.