I wouldn't recommend any antenna sold on eBay unless it had a major manufacturer's name on it like Winegard, Channel Master, AntennaCraft, AntennasDirect etc. Have you tried Googling the antenna that you are asking about? The tip-off is that they allow NO REFUNDS or exchanges! The antenna that you have mentioned is a bad joke, and should be avoided. You live in a deep-fringe area: with the Orlando and Jacksonville stations about 60 miles away : you will need a deep-fringe antenna system to get a reliable signal from either of those cities, and a rotator if you want to see signals from both cities. Sorry to say it, but there is no quick-fix or shortcut to good TV reception when you are 60 miles from the transmitters.
Since you have a mixture of VHF and UHF signals from both cities, I would suggest using either a large combination antenna like a Winegard HD-7698P or use a separate UHF antenna like an AntennasDirect XG-91 plus a VHF-high-band yagi like a
Winegard YA-1713 or an AntennaCraft Y-10-7-13: you combine the two antennas using a Pico-Macom UVSJ, then run the coax cable to your TV set. The separate antennas will give somewhat better signal quality at the expense of additional installation complication. You need to mount the antenna as high on your roof as you can manage: Concrete tile roofs complicate installation: it is best to use a eave or wall-type mount that can see above the roof-line. If the Orlando stations are all you are looking for, you can avoid the use of a rotator and just aim the antennas due south (180 degrees by your compass). If you want to see the Jacksonville stations, you will want to use a rotator, and I recommend the Channel Master 9521a, which is remote-control operated. If you plan to run more than 75' of coax cable, or want to run multiple TV sets from the antenna, then consider using a preamplifier like a Winegard HDP-269, which will give you enough gain to run up to 4 TV sets from the one antenna system if you use a splitter.
http://winegard.com/kbase/upload/HD7698P.pdfhttp://channelmaster.com/product-overvi ... 8&catID=34http://www.solidsignal.com/pview.asp?mc ... 00-(HDP269)&c=Pre-Amplifiers&sku=615798396145
http://www.solidsignal.com/pview.asp?mc ... enna-(91XG)&c=TV%20Antennas&sku=853748001910
http://www.solidsignal.com/pview.asp?mc ... na-(YA1713)&c=TV%20Antennas&sku=615798304867
http://www.solidsignal.com/pview.asp?mc ... rCombiner-for-Antenna-(UVSJ)&c=Signal%20Combiners&sku=
And here is an instruction manual:
http://manuals.solidsignal.com/AntInstallGuide.pdf