I'm very new to this mining, but have ran into many sites trying to find sellers with these and other miners.

I am picking up some Baikal A900's from a company in Houston. (yes perfect timing, right after Harvey hit).
www.greenteksolutionsllc.com
They have some on Ebay right now (9/1/17) you might be able to get.  
Their warehouse didn't get flooded so the equipment should be in good condition, albeit it is used.
They don't do Miners all the time, they are an equipment reseller.  

For D3's and L3+ I found this store.  However they only do BTC.  Prices change quick, and they run out fast.
They also have an AliExpress store that has overstock (which is rare) and that can take PayPal.
I have not purchased from them, but I hear they are legit.  (anyone has different experience let us know).
www.eastshore.xyz

==UPDATE==
This one has some PayPal and CC logos but I have not seen any way to do that.  May have to contact them to setup something.  They may have an L3+, then they have some older Baikal 2000 and A900's.  But they don't update their listings so it looks like they have items but this the details show "out of stock".
Again, I have not purchased from them, but hear they are legit.
www.asicminermarket.com
I have now made an order from them (very small $19 cable) and they appear to be a SCAM!
Not only has it been nearly a week for the order, they are still "processing" it, for 4 cables. 
Also they do not reply to emails or communications from your account login. 
So I am calling them a scam and to stay away from them, unless giving bitcoins away is your thing, in which case please send them to:
 1FGAwN5k8KNFobBhzWpVrNVmBzdg35FRtd

==UPDATE==

Finally, these guys have older equipment, but should keep an eye to see when new stuff starts showing up.
Again, I have not purchased from them, but hear they are legit.
www.deepinthemines.com

Best wishes and happy mining,