Available direct at bargain prices, here is a nice range of knitted and plain ties from long established manufacturer Michelsons UK.
Knitted ties in a variety of widths and textures, plain or striped, all in silk are circa £16.99, wide polka dot scarf £22.00, there is an extra wide version for £30.00 and this simple blue silk polka dot silk tie is just £10.00. It's hard to see how you could achieve better value. I have just received from them (free p&p and overnight too) a polka dot scarf and a knitted silk tie, both superb quality and perfect. I'll be ordering more soon.