What is EUR to USD conversion rate at bitstamp? Bitstamp allows deposits/withdrawals using SEPA (EUR only), but all traidings are done using USD. It is nowhere described what exchange rate is used when doing these deposits/withdrawals.

There are some indications that amount of money lost in conversion may be significant:


The order book only offers bitcoin-dollar trading so conversion fees apply on deposits and withdrawals (the conversion spread can be queried by API). [1]
Bitstamp has an EUR bank account in Slovenia to which I deposited euros, then it converted to USD. Then it converted the EUR deposit to USD but I checked the daily EURUSD forex range and Bitstamp converted my EUR to USD at a rate worse even the worst rate in the 24-hour daily range; I have to say, clever: another small profit source for them. [2]


Does anybody know how big the EUR/USD spread at bitstamp really is? Is it significant?

[1] http://blog.kraken.com/post/97016109057/what-does-it-really-cost-to-buy-and-sell-bitcoins

[2] https://bitcointalk.org/index.php?topic=825459.0
I believe the EUR / USD conversions are preformed by the bank with which Bitstamp works. They have conversion rates which don't appear to be market-driven, but are set to a fixed rate that includes the bank's fees.

The exchange rates link provided on the website leads here:
http://www.raiffeisen.si/pripomocki/menjalniski-tecaj/