The 900 series of Sanrenmu knives (the larger ones - non EDC) are going out of production (probably due to changed Chinese knife laws), so if you are interested get them while you can. (I will buy 909,908,905 the next days)
Take into account your local knife laws before you order. (UK,Canada, Germany and others)
Let me pull out my knife tab on Firefox (with focus on Sanrenmu knives - the "Romisen of knives"):
Shops:
exduct (also has BEE, Enlan, Navy, Ganzo knives - no free shipping, but often special limited products , There is a special BLF discount for 5% off available now and you can win a $20 coupon by using it. )
Manafont (they recently upgraded their selection, thanks)
Tinydeal there is a 5% discount code floating around
Priceangels there is a 3% discount code floating around
Aliexpress and especially Daniel's Shop and David's Shop (unfortunatly they don't take PP anymore, but you can ask the sellers for personal PP accounts)
Hoursbuying discoverybargain (good prices... also has BEE,Navy and Ganzo knives - mixed experiences here and there)
edc-depot (especially interesting for USians)
Dino Direct has some SRM Enlan and Navy knives but their search function doesn't work. The are all "folding knives". They have some rare ones, even though their prices are a little on the high side.
greatwalloutdoor (now has "flatrate" shipping, prices are usually higher than normal, but they have some rare ones))
NGShopping (Price Comparison Site)
DX has no SRM,BEE or Enlan Knives but recently added some Tekut knives.
Discounts: www.retailmenot.com is a good site to look up general discounts.
Manufacturers:
Sanrenmu (LAND) homepage (good for recognizing the different types of knives Sanrenmu/SRM/LAND) Update: According to varies sources that's not the factories homepage.
The "Athletic series" on this site are in fact not Sanrenmu knives but Enlan/Bees.
Navy Knives homepage (Many of their knives resemble Spyderco/Byrd knives... what a coincidence ;-) )
Tekut knives and multi-tools homepage
Ganzo knives and multi-tools homepage (it's time to update your Chinese ;-) )