Does anyone have experience selling in Delaware City? 

I primarily work in Delaware county but also serve Philadelphia, Montgomery and Chester counties.

Welcome @Ruud Van de Beeten to Bigger Pockets.

@Elizabete De LimaVisit the local REIA meetings there are ones in Rockland, Taunton, Plymouth, and Providence.Brandon Turner put togetherThe Real Estate Agent's Ultimate Guide to Working with Investorshttp://www.biggerpockets.com/renewsblog/2013/08/24/real-estate-agents-working-with-investors/

I did some research, and the Delaware minimum for trash/sewer/water is $45 month. 

I always recommend trying to work for a real estate investor or de-risking your investment by starting with a LIGHT value add SFR. 

I would agree with @Rich O'Neill about the areas of West Philly, you can certainly find a duplex far below 250k that needs some work done to it, and will bring good appreciation in the long term.I would also consider looking in Delaware County, specifically Drexel Hill.

My education is BS in Criminal Justice, and an MPA.I am relocating from Oregon to Delaware area in July 2015.  

I recently read a story posted under Title Insurance weirdest stories by Wendy Noble, Real Estate Investor, NY.I would like to use her story in our quarterly newsletter, which is distributed to over 200 title agents in Delaware.

You didn't worry about how to qualify for the Tour de France.