I shop at Poundland a lot but recently noticed that my local cash and carry were selling stuff even cheaper than Poundland even with the VAT added on, it was cheaper eg. ring binders 2 for £1 but you need a limited company (any company).
Ebay : I buy on eBay and sell on eBay too. Anything I don't want, I sell on ebay and with the money I get buy what I need on eBay.
Any leftover veg gets used as pizza toppings or veg stir-fry kebabs.
MY TOP TIP: COMPLAIN!!!
If you feel you have received a poor product, complain online.
Once I had a pampers nappy where the sticky strap fell off making the nappy unusable. A one minute Freephone phone call to Pampers and I got £5 voucher.
I complained about an open walkers crisp packet in a multipack, again £5 voucher.
I complained about Sainsbury bread which went mouldy within a day, again £4 voucher.
Only complain if genuine. For me it's not the money, but the principle, I would complain even if I didn't get a refund. Some of you may think I have too much time on my hands, maybe I do, but the vouchers do help. Recently I ordered three taps on eBay, two were very slightly marked. I complained and received a refund for two of the taps and was told to keep the taps as it would cost too much for the seller to reimburse me the postage!
I have so many other examples but I'm starting to look a bit crazy now! :)