What should I do with 07 F150 with Blown Motor?

I have a 5.4L 2007 Ford F-150 Extended cab that has shot something out through the Oil pan which I am guessing could be a Piston since I have never seen what was shot out. I don't know where to start looking to have someone look at it. The second I tell a mechanic that something shot out of Oil pan, they tell me to just buy a new Engine or get rid of it. After paying $30,000 cash for it brand new, it's hard to just forget about it after only 8 years, 100,000 miles, and 0 Accidents.

So I would like to know 2 things, How much would I be realistically looking at to have a used engine installed to get it back running Including cost of a engine? And If I was to sell it to buy a used car, How much would it be worth with a blown engine in Excellent condition? (One and only problem is engine, no other problems)

Thanks for all replies in advance! All advice helps and a best answer will be chosen. This was my family only transportation and I don't have much income right now.

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