In the atlanta area cheap switchblades can be had in convenience stores run by mom's and pop's (usually from india, pakistan, korea). They are kept under the rolls of lottery tickets, just behind the porno mags but to the left of the methamphetamine precursors, perpendiculor to the blunt rolls, within a short distance of the "rose in the test tube crackpipe".
The sexual enhancement pills might obstruct the case from opening , but if you move them, as well as the crack lighters , the copenhagen, and the hangover helper then your 10 dollar bill should do the trick and leave enough left over for a pack of GPC's and a "Foetee uh Ode E Ate Hunet" er I mean a Forty ounce bottle of Olde English Eight Hundred Malt liquor.