Don't bother buying burgers...make 'em! Simple enough to do and so much more tasty.
This is what I do...
500g regular mince
Split the mince into four balls, and then mould, pat, shape each ball into burger shapes, wrap each burger in greaseproof paper and fridge for a couple of hours.
Light the Q and grill 'em up..."They're Burger-Tastic!"