I found this link the other day. It lists the average rate for OBI consultants in the USA.

http://www.hotgigs.com/rates/skill/Oracle-Business-Intelligence-hourly-consultant-bill-rates/

At 137 dollars for an average consultant and on a straight conversion these look slightly lower than the UK, but the cost of living over there is lower.

adrian.ward@addidici.com
www.addidici.com