Hi zeshan
Being an engineer isn't as simple as passing a multi choise exam, The amount of experience and knowledge you need to have for an employer to consider approving you to signing thier aircraft may be more than the work experience prerequisite to getting a basic B1 license, for instance in where I work you wouldn't be considered for an approval unless if you have 5 years of experience and 1 year of A1 signing, It's hard to get someone with this profile hence there are apprenticeship schemes orchestrated by the airlines should they need newer guys to replace thier long serving engineers that are on the verge of resigning, And those apprentices are fully sponsored by the airline they don't have to pay for the part 66 course.
And given the current recession these apprenticeship schemes have shriveled down and it's really difficult to get a foot in the door, Now that you have spent your money already there is no way back It's either take the torture or leave it, And by torture I mean you may have to work unpaid for 2 years to get the license and even if you got your license you may still face a difficulty at getting employed if you're not typed so you'd have to then drop your CV everywhere and hope for the best atleast it will be more appealing with the 2 years unpaid experience and the basic license.