The price showing on Ikenvape for the AW Blues is that per pair? Pricey if single, but you get what you pay for as mentioned.
The price is for a single battery. $7 may sound like a lot but it's really not, considering the fact that they will last you for no less than 6 months and possibly longer. After all, we used to pay that much for a pack of stinkies which would only last about 1/2 a day for some of us
Quality batteries are crucial for safety and an overall great vaping experience. IMO purchasing the best battery available is the only way to go.