Provisioning through DreamYacht charter

Hi All, looking into provissioning through Dream yacht charter and looking at the prices, are they out to lunch, or reflect costing in the grocery store? Pricing is right after the ML and are in EC$. just trying to decide if it is worth the hassle and effort to lug 8 24 packs of beer from the grocery store to the boat... among other provisions. Hard to find out prices though over the internet.

Sodas EC$ QTY TOT.
7-UP 7-UP 2 355 ML - can 5.25 0
ANGOSTURA LEMON LIME & BITTERS 6 PACK 21.68 0
CANADA DRY CLUB SODA 355 ML 5.08 0
CANADA DRY TONIC WATER 355 ML 5.08 0
CANADA DRY GINGER ALE 355 ML 5.08 0
COCA-COLA CLASSIC 500ML - bottle 3.50 0
COCA-COLA ZERO 355 ML - can 6.10 0
DR. PEPPER REGULAR SODA 355 ML 4.23 0
MONSTER ENERGY DRINK 473 ML - can 7.70 0
RED BULL ENERGY DRINK 4 PACK 32.03 0
ROYALTY GINGER BEER 330 ML 3.96 0
SPRITE SODA 500ML - bottle 3.50 0
SPRITE ZERO 355ML - can 6.10 0
TING TING BOTTLE 275ML - bottle 3.49 0
Beers EC$ QTY TOT.
CARIB CARIB BEER BOTTLE 275 ML 4.25 0
STAG LAGER BEER-BOTTLE 275 ML 4.25 0
CORONA BEER BOTTLE 355 ML 7.00 0
HEINEKEN BEER BOTTLE 300 ML 5.04 0
HEINEKEN LAGER BEER CAN 250 ML 5.48 0
PRESIDENTE BEER CAN 355 ML 5.00 0
CARIB BEER LAGER CAN 330 ML 4.94 0
STAG LAGER BEER CAN 330 ML 4.94 0

Carib was 30.00 per case at the grocery stone in November .