looking to buy weights for home, which ones and where from?

I only have 1, 2.5 and 4.5 at home and i would like to be able to have weights from like 6/8/10/12/14 and not pay £50 per pair....anyone know of any or whether the cheapo ones are worth getting?
 
cheers!

Yes gumtree, eBay and powerhouse fitness and amazon are quite expensive but they do have 2nd hand section private sellers not from amazon directly

Don't know if this works out cost effective for you.  But maybe getting some olympic dumbell handles with spring clips and some 2.5kg or 5kg dumbell discs.  Might be space efficient as well.

Try going around charity shops and car boot sales it's pot luck plastic dumbbell metal ones I got a stepper once

Keep an eye on Ebay, I have built a reasonable collection of weights over time.
Second hand aren`t always that much cheaper than new and you have the expense of collecting them yourself.
But you can pick up good quality weights at reasonable prices.
I did local searches on Ebay and just bought job lots, you don`t always have much choice.
Its worth while buying a decent barbell or two, preferably Olympic then building up your collection of weights as you need them. Just takes a bit of time.