I'm not into bitcoins but 10% from merimobiles is quite rare.
pay with bitpay and get 10% off.
also increase the goodness by signing up for the newsletter and getting 2000 merimobile (MM) points of which 500 or US$5 can be used to offset your purchase (dependent on the item)
I have tested this and have gotten to the Bitpay checkout screen with a Lenovo K3 Note for US$147.09.
not too shabby!!
oh yeah, you can't combine the bitpay deal with other coupons so the MM point are your best "further discount" option (as far as I can see).
If anyone is interested to buy bitcoin to make the purchase, I'd recommend either coinjar or btcmarkets to buy.
Luckily I already have some on hand :D