I would say a fee between $1500-2000 for the tax prep is fair. $400 per month for tax prep is way too much.

Has anyone had success with a contingency fee collection agency?   

There isin't one set fee that everyone pays; so it may be hard for someone to tell you via a post.

Deal fees alone won't get you there.

So yeah, a $50k offer makes sense to give you room for a wholesale fee. 

For two adults, that's $70-80 in application fees. 

Do I charge my end buyer the highest number they say is their max price range if I have the ability and chance?

My note investing goals;Buy lowNon-performingHold and collect mortgage payments Resale to an investor looking for performing note Address: 2124 Tullis Dr Montgomery, AL 36111Asking: $42kLayout: 3/1, single family homeArea: CLien position: 1st UPB: $80,968.80Monthly mortgage payments: $719.78Sale comps: $62k Rental comps: $600 per month4 months behind on mortgage paymentsTaxes: $218/year (actual, from county website)Insurance: $217/yr (based on a formula for a home in the 50k-60k range)Here are my thoughts on how to underwrite it: Offer: $28k Fair Market Value: $62k Modified mortgage payments: $650 monthlyPayment upfront: $5kI came up with the 5k based on lawyer fees, BPO, tax for the yr, insurance for the year and servicer fees.

Additionally, they owe you for any damages, cleaning fees, etc for move out. 

The monthly numbers:Gross Rent = $1100Taxes & Insurance = ($156)Vacancy = ($92)Repairs = ($77)Trash, Lawn/Snow, Inspection Fees = ($103)PM Fees = ($161) based on 80% first month, 8% monthlyWater = ($46)Capex = ($110)Total Cashflow = $355/mo, $177/doorROI = 9.5%.