RRR is "...seeing them..." and knows where to find the antenna, but based on his/her request is unable to search or call to find out a lower price and needs assistance. Perhaps he or she is looking for the new Larsen NMO-150/450/758 with the spring for a price lower than $50, as this is in the scanner equipment sub forum.
Please confirm or advise of the antenna model you are interested in. Happy to help.