If you will settle for the T version, keep watching Ebay. There's a bunch on there. I just won a bid three days ago on one, new in an unopened box for $409 plus $49 shipping, $458 total from an established seller with a 100% rating. The cheapest locally I could find one was $600 plus tax (though I didn't look real hard).
It seems that the Plus versions are no cheaper than local sources, maybe because they are pretty scarce on Ebay.
At least you are going with a name brand. I started with a HF mig several years ago and it has already died after light use. Never again.