I paid in full today rather than making the $1,500 deposit. I'm not up on phone money apps, and this didn't seem the time to start dabbling. Since $50 is wasted for each wire transfer I decided to cut that loss to $50 rather than $100, which is better than the 11 cents I'd get a month in interest until final payment is due.
That's a good idea... my only caveat would be if they miss their target ship date or something catastrophic happened, you'd be out the full amount and not just $1500.