This is my chair; I got one for £40 out of the ex-display section at IKEA. It really punches above its weight for the cost, though for reference I am 85kg/185lbs
https://www.ikea.com/gb/en/products...wivel-chair-with-armrests-black-spr-59208197/
https://www.ikea.com/gb/en/products...wivel-chair-with-armrests-black-spr-59208197/