JDR Microdevices, San Jose, CA carries a number of the 90S series AVR chips.
The 90S8515 is $5.99.

http://www.jdr is web page. AVR chips are not in the on-line catalog, you
have to call for what they carry. Check web site for phone.

p.s. - the 8515 (40 pin) is a neat chip with lots of flash program space
(8K), 512 bytes SRAM, 512 bytes EEPROM! Also like the 90S1200 (20 pin) for
small jobs. Easily programmed off parallel port.

A number of free Basic and C compilers are around. Send private email if
interested in details.

Ron