My two cents is that you offered him a bad advice...
The current trend is dual format burners, or (since the +R prices have gone down alomost at the -R levels) a +R burner which has certain advantaages over a -R one.
A few pounds more for a +- nurner would be fully justified, IMHO. Of course you have nothing to lose, since it's not your burner.
The revolution cannot be a lever, or an essay, or tablaeu, or embroidery. It cannot proceed mellowly, piece-by-piece, gently, devoutly, simply and humbly.
Mao Zedong