How much is a 1985 boxed nes console fully boxed?

[JoeP]

hi how much do you think my 1985 Nes console is worth fully boxed all leads instructions warranty no yellowing pull out flaps with original mario bros fully boxed with instructions everything mint and in perfectly working order.

i bought it on ebay for £35 is this a great deal or not

i have no intentions of selling it ever and will look after and keep it in perfect condition forever.

but i was just wondering what its actually worth i know there rare and collectibles and hard to find boxed and mint but was just wondering what there actually worth now and possible what there worth in 20 years.

i am a keen nes collector and i collect old super mario games legend of zelda and great console games ETC

thanks