Below is the info I got from the Anet GW2 forum.
Was wondering whether if it is a good idea to get some gems when it is at 20% discount?
Any opinion guys?
Since our last Beta Weekend Event we’ve made quite a few changes
and improvements to both the trading post and our world transfer system.
We’ll also have special daily sales going on in the Gem Store throughout the Beta Weekend Event.
Read on for more information!
Remember: You will be charged for all gem purchases made during the Beta Weekend Event,
but any gems you purchase will be credited to your account when GW2 launches.
You’ll find all the details right here in our Gem Store FAQ.
World Transfer
World transfer will be free and unlimited from Noon July 20 to 6:00 PM Pacific on July 21.
After this period, you’ll need to spend gems for a transfer.
Transfers will still be unlimited.
The gem costs for a world transfer after 6:00 PM Pacific on July 21:
1800 gems to transfer to a high population world
1000 gems to transfer to a medium population world
500 gems to transfer to a low population world
Trading Post
Dyes are now tradable in the Black Lion Trading Post.
All items for sale must be posted for a unit price that is above the vendor value of the item
(if the item has a vendor value).
Daily Gem Store – 20% Off
Each day during the Beta Weekend Event we’ll offer a different item on sale for 20% off in the Gem Store.
All sales begin and end at midnight of each day.
Pardon my English as it is not my 1st language
Comments
They reimburse the gems at launch (or the 3 day head start).
I was thinking of buying extra character slot or maybe some inventory space.
Maybe just get another new boxset instead of buying gems?
Pardon my English as it is not my 1st language
Read the post again.
They will be having sales where items in the gem shop are 20% off, not the gems themselves.
The gems are normal price, but the items will be 20% off meaning you can buy more items with the gems you buy. Come launch you will get whatever gems you purchased back, but will not have the items.
My Guild Wars 2 Vids
They are testing the gem store.
Yeah, my bad, I misunderstood you.
I've heard people say that they might want to test stuff out for themselves before they actually use the gems for real. So it gives some people a chance to check out some of the items and decide if they were worth it.
I'm not buying any though.
Yea my bad .
No idea why the fk there is a 20% discount on purchasing the items instead of the gems in BWE.
Anyway saw on the Anet gems Q & A
Q: Will I get to keep gems I got from the currency exchange after the beta?
Pardon my English as it is not my 1st language
So you don't have to buy as many gems to try something in Beta as you will in live.
To generate more 'oh a sale', I better buy it. Credit card on file and you are a fish halfway to land. You will get the purchased gems back but not the items (for release).
One thing I was SLIGHTLY disappointed with was the the server transfer costs. If 800 gems = $10 they made it necessary to buy 2 gem purchases($20 to get 1000 gems) to make a jump to a medium pop server and 3 ($30 to get 1800) to make a jump to a high pop server .
Both could have been dropped by 200 to make it a nice $10/$20 for the transfers. It's subtle but kind of n off putting, IMO
As far as gems in general, I MIGHT see myself plunking down $10 for an extra bag slot or two (I forgot how much they were) for my main.
More likely though after playing the BWEs I'll just make some mules and park them near their local banks and just use good bag management.