Thank you for your replies. It's not a matter of not finding other vendors, I was just curious how this particular brand ranks amongst what seems like thousands of others. I have placed an order for a few 5ml bottles from ecblend.com and am waiting for them to arrive. I'm sure I will order from others too, but now it's a matter of having the money to do so.
The local shop I buy from sells Hangsen 15ml bottles for $6.95 each. It seems reasonable and it is defintely convenient, but the flavor does not seem very strong. I don't know if it's me or the juice. The first bottle of RY4 I bought from them seemed strong at first but not so much with the second. I know that tastebuds change after quitting smoking and all that, but I am hoping that it's the juice and not me so when my order shows up, I'll actually be able to taste it.