I use a Xerox C525A, which seems to work well. I'm not sure about Brother, I read somewhere that their toners melt at a higher temperature to the other brands, but obviously it doesn't hurt to try if that's what you have anyway.
For Pulsar stuff, you need a pack of the transfer paper (10 US Letter sized sheets), plus a roll of green foil to seal the toner. White foil is optional for making a silkscreen, but you can just use the green foil to make a green silkscreen if you want to. (Pretty sure the converse is NOT true, ie. you shouldn't use the white for sealing the toner, as it's thicker and more sticky, but you can use the green for either sealing or silkscreen.)
I think green foil would cost you about £5? So roughly £15 to get up and running with paper and foil. Note that Press and Peel has both the transfer paper and the blue sealing foil built in. Apparently Pulsar works better for this reason. It's also cheaper, as with PnP you only get 5 A4 sheets for about $35 (£20?).
Edit: If you are having trouble with your Brother printer, try taking some of the PnP to a photocopier and seeing if you have any more success. Hopefully it's not your printer, but you don't want to be troubleshooting too many things at once.