If you choose to make a more aggressive approach to the low priced pre-owned market then one thing to consider is on the lot merchandising. A very smart dealer the other day took his lowest priced used cars and figured 60 month payments, with about 7% APR with approved credit and displayed on his vehicles what a payment would be with mce_marker money down, then what a payment would be with $2k down. 

The purpose is to show payment options with monthly budgets of the consumers being tight, allowing the used car tire kicker to have some options and make them start thinking.