As for hardware, you will need some sort of spacesuit, presuming you actually want to still be breathing when you reach space that is?! However it would not have to be anything very sophisticated as you could dispense with articulated joints and such.
I will have to check my books when I get home but off the top of my head I reckon a large sounding rocket might fit the bill but obviously exependable riocket parts are not often available second hand so maybe something like an unused but out of date miltary missile, say an old Corporal (or whatever a more recent equivilant is?) raised to altitude under a large helium balloon?
But on your budget you might have to save for three lifetimes to achieve even that.
Alternativley you could have your remiains cremated and fired into space on something a bit more modest?