I agree with the my beauty diary masks, they're very affordable and good ones to start out with. There are also some cheaper ones like kose that comes packed in a tub rather than individually packed, great value too. I would be very careful getting them from eBay though because my beauty diary has been quite well known for fakes. I personally have come across some but luckily I didn't actually use them on my face. It smells funny unlike the usual ones I used so I started looking it up and realised there are fake masks in the market. I usually buy in bulk when I'm in Asia or I get it from sasa.com if I'm desperate lp.. My personal favourite is the black pearl one.