If no other volunteer turns up, you can always phone Sam Hughes in Hachita (575-436-2662 ; I am not sure about international pre-dials).
Sam is 82, but last year he still did shuttles from the border to Deming and Lordsburg with his Cadillac within your budget.
His business card reads : Prospector - Treasure Hunter ; Tires - Land - Whiskey - Manure - Guns - Gold - Snake Oil -Used Cars - Birth Control Pills - Mining Claims - Mules. I'm not sure if he can do a 6-pack.
That is gold - I reckon we could be on to something. I agree a mule with a 6 pack waiting at the finish would be ideal...