up vote 0 down vote. You can nest up to 7 valid or invalid entries. If you need to have more than that you should perhaps designate a column for your black list of entries that you can add to when an occurrence causes a count that you don't believe should be valid.
So how much does a float tank cost? Float tank prices vary widely depending on the size and the features of the float tank or pod you want to buy. Expect to spend anywhere from $12,000 to $40,000 to buy each commercial-grade float tank needed in your spa.
On average, a floating dock can cost anywhere from $18 to $30 per square foot of space that is used. Most of the time this is for materials and will not include professional installation costs. On the site RollingBarge.com, it is stated that you should set aside $24 to $30 per square foot. The piling types of dock can be around $35 to as high as $60 per square foot for the initial cost.