Oligo aptamers instead of Antibodies

Hello /sci/,

Does anyone know if there are commercial outlets where you can create a DNA or RNA aptamer to bind a protein of interest, instead of paying for someone to create a mouse or rabbit antibody specific to that protein?

Also, if such a thing exists, is anyone aware of the relative cost of the two?

Thanks

>>1
I think the pharmacy in Wal Mart does it.

>>2

i lol'd at wal mart