I normally shop between Paddocks and Lrseries as I dont have a cheap parts dealer near me. However, for some bits a LR main dealer could be a good deal.... I needed a new fuel tank for my 110 and they supplied an after market tank at a good price.
Postage is one to watch... over £50 and paddocks is free unless you want it the next day. LRseries offer a personal quote if you just want a a few washers or the like... normally 99p. Its always worth finding your part number (you can do this on here) and google it. Sometimes a wish list re eg chequer plating or the likes can be taken to a show.... I find that shows are great for hands on looking at the quality and you can barter for a deal. But for run of the mill.... internet.
Paddocks dont list everything they have in stock.... well worth emailing them as I have found they DO stock most things... same with Lrseries.
If you are looking at rear windows.... heated or plain, plenty about. As for side windows I would go to a show and see the quality... buy cheap, buy twice. Try searching on here for side or rear window advice.
You dont say what LR you have? You will find for eg... on the 90/110 a parts list for the most insignificant washer you want.
