Smallish box with few parts needs a lift from Stilfontein to Boksburg/CT

Were buying some spares from a guy in Stilfontein and need to pay him and collect the spares and get it to my work in Boksburg JHB to be sent to CT.  Have to part with R3000 for a XT crank,mastercylinder and 2 X plastic parts but as us humans are not trustworthy obviously we almost need to verify the parts are there before transferring bucks, absa to absa, so clear in minutes. Any thoughts assistance appreciated