As Radson said, you generally get what you pay for, basic logistic support is inexpensive but if you want carpet and strip-lighting in your tent, then Himex will cost you €40,000 or so.
For local companies Aisan Trekking is probably the most experienced and have provided support to many "independent" climbers over the years.
If you want a "Western" company then I can recommend summitclimb having climbed with them previously. However, if you want someone to hold your hand, figuratively speaking - which I've noticed a surprising number of people do, especially when they get there - then they are not for you. The offer two levels of service; full and basic. Check out their webiste for further details
www.summitclimb.com/new. 7Summits might also be worth checking out.
Are you planning a summit bid?