The Altair 8800 computer was a break-even sale for MITS. They needed to sell additional memory boards, I/O boards, and other options to make a profit. The April 1975 issue of the MITS newsletter "Computer Notes" had a page-long price list that offered over 15 optional boards. The delivery time given was 60 or 90 days, but many items were never produced and dropped from future price lists. Initially, Roberts decided to concentrate on production of the computers. Prompt delivery of optional boards did not occur until October 1975.