Excel are a Japanese brand that do cheap looking but very nice products, this eyeshadow duo included. I have only own one previously, but I found the two shades to be pigmented and soft, especially the darker complimentary shade in the set.
It is now $40 HK dollars at Adambeauty, worked out about £3 to me here in the UK. Yes, I added them all to basket!
I shall report back soon with the results.