My woodburner was a £250, 11 Kw multifuel jobby off ebay, from a company down south, i suspect a chinese import. Works fine, my missus managed to crack the glass last year closing the door on a long log, but we got a replacement glass off ebay, £40, (in fact i got two , just in case of an action replay).
Ive replaced the rope seal round the door this year, but it isnt really necessary, the draw off the chimmney is collossal. No gas woudl ever seep out even if the seal wasnt there.