According to Jolla Users, there is currently a discount code for an additional 20 Euros in the Jolla store.

http://www.jollausers.com/2013/12/small-trick-to-get-e20-discount-on-jolla-phone/

It's a code which has been given out to a few customers who were experiencing technical difficulties with their orders in the store.

I'm not sure how long it will be valid for so get in quick if you're looking at buying the Jolla phone this weekend, as it may expire quite quickly!

Type the code "BETA20" in the coupon area at checkout for 20 euros off your order. ;-)