Why in gods name would somebody want to kill a mechanic that just saves you time?
It makes no sence for the majority of players that dont sell overpriced goods.
It would just look dumb for new players aswell.
The only mindfull change would be a tickbox that lists the items in gold per item instead of absolute value.
For example 10 soulstones for 8kk total would be listed before 1 soulstone 880k.
Any other change to shopsearch would just destroy the meaning of the entire system.