Don't let your self be swayed by a cheap price on crimp connectors. Good quality connectors will be made of tinned copper and not aluminum. As I mentioned above Ancor Products, FTZ and AMP all make very good quality insulated and heat shrink terminals so you don't necessarily need to buy them at West Marine.
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For example, I buy 100 adhesive lined yellow terminals from my distributor for about $70.00 per 100 so my guess is that you should be able to find them for less or slightly more. West Marine sells 25 for about $32.00 or about $128.00 per 100..