There have been some threads about finding deals based on price.
There are also lots of forum posts in Ask the Hackrs without sufficient information.
How about creating fillable fields for the information needed to evaluate a deal (MSRP, selling price, incentives, DAS, monthly, etc.). Then we can sort posts based on these values and no more need for “leases under $250” etc. Add a date field (automatically) and the searches can also be limited to time periods.