LEGO Pirates price

Here's the price from Toys'R'Us in US. Looks like the price is reasonable and quite attractive.

#8397 Pirate Survival -USD 4.99
(I guess the other impulse are the same price)
#6239 Cannon Battle -USD 5.99
#6240 Kraken Attackin -USD 9.99
#6241 Loot Island -USD19.99
#6242 Soldiers' Fort -USD49.99

#6253 Shipwreck Hideout -USD39.99

Here's the link: http://www.toysrus.com/search/index.jsp?kwCatId=&kw=lego%20pirates&origkw=lego%20pirates&f=Taxonomy/TRUS/2254197&sr=1

Sources from Toys'R'Us.