The price (& quality) of fake gear can vary around the resort Debbi but as a guide I'd say...
Jeans from £10-15 (I've bought very good quality Armani/Evisu & Levis over there before
mens t-shirts - from £3-5 for t-shirts up to £9-10 for top notch fake polo shirts (Lacoste/Ralph Lauren)
3 designer handbags - My girls bought a few this summer. From £10 up to £30 for most of them but I did see a girl parting with £40 for a huge Hermes? bag
10 kids designer t-shirt - As above from £2-3 upwards depending on what you want
6 kids designer skirts ,jeans - We've never bought these for our kids over there but presumably they are less than the £10-15 that I've paid for mens jeans.