there you go, stick with AMERICAN LAB.
long legged,skinny waist,no boxy head.

another thing, you are not going to find a good lab for under 700,i believe.
if labs are raised for hunting, they will hunt.
if breeder does not hunt or raise labs from hunting stock, you will get a HOUSE dog.
go cheap, i will gaurantee that you will be at vets and spending well over the 700 dollars, in health problems.

do a GOOGLE search of HEALTH PROBLEMS IN LABRADORS,this will open your eyes.