The 270s are starting to show up for $200-220 from various retailers, with no service plan required. A couple of examples:

http://www.compgeeks.com/details.asp?invtid=1030NA-N
http://www.axiontech.com/prdt.php?src=SH&item=49065

Has anyone bought one of these? Do they work out-of-the-box with T-Mobile, or do you need an unlock code?

Thanks,
Stuart