When we were researching mattresses we found a few sites that had similar information which I have quoted as follows:
"A full-size mattress should have at least 300 coils, a
queen size should have about 400 coils, and a king size
should have about 480 coils.
If you find an innerspring mattress with a coil count
below 300 for a full-sized mattress, it is generally of poor
quality. On the other hand, you can get too many coils in an
innerspring mattress. When the number of coils is increased,
the size and thickness of coils are decreased, thus reducing
firm support. Extra coils, however, do not necessarily
enhance the longevity or performance of a mattress. It is the
design of the coils and their arrangement that is more important."
We also learned that the gauge should be no thinner than 13 and the number of turns in each coil affects durability and quality. We found that in cheaper Serta mattresses like "The Perfect Sleeper" coils had only two turns.
Anywho, our opinion is NO, we would not pay $400 more for a few more coils.
Best of Luck
