readability5
You have been had!
The LAMS tasks on an annual check should take about 3.5 working days, in total about 28 man hours, depending on what is due in terms of AD's the cost will go up somewhat but the real unknown is the defects, i have seen these go past £10,000 in the worst case of PA28 corrosion that I have seen.
Parts are another thing that will push the price up if a landing gear leg fails the AD on the luggs the parts will cost you around £ 1600 and it will take about 12-14 hours of labour to fit.