My electricity cost is quite similar, and I still have a rig of 7000 series cards running. It's not immensely profitable, but I still recoup power costs and then some (if I were to trade my coins for USD immediately, which I usually don't).

I also have a rig of 3GB 1060s that is much more successful. When power costs are a concern, you should try to go for more power-efficient cards, even though used upper-tier cards of previous generations sometimes offer better hashes for the initial investment (when they are available in sufficient supply).
(Both rigs are currently mining Zcash.)


When it comes down to it, you'll have to look at the mining profitability estimates on your own (see online calculators), and then decide whether or not certain hardware is worth mining with. I will caution you, however, that this may not be the best time to invest in new hardware, given the uncertainty created by some of China's recent policies. (To be honest, I suspect that the Chinese are attempting to use their influence to conduct insider trading after encouraging users to panic sell.)