Seriously....80 quid for a scope......so what degree of accuracy are you expecting.
Pay peanuts get monkeys.
There is a point below which you really cant have any 'expectation' and probably 80 for a scope I would consider a waste of money or perhaps a bic biro purchase at the very best. Personally....I would go for the biro.
Then to expect MOA tracking form extreme to extremes.......ok.......thats more than I would anticipate from an 80 scope.
As had been mentioned....scopes costing a lot more than this have issues and its still at best a 50/50 as to whether you got a goodun or a wrongun.......
If you need to buy cheap...at least buy 2nd hand and make your money stretch as far as possible.
But 80 quid......unless you in china where the labour and infrastructure is somcheap then you really dont stand a bloody chance of any sort of engineering but a bucket load of exploitation.
In a battle of wits I refuse to engage with an unarmed person.
To one shot one kill, you need to seek the S. Kill only comes from Skill