How much did they charge you for shipping? I'm thinking of getting that very kit soon from Ag. And it says it's a 5L kit, presumably that means it makes 5L of something - what's the approx weight of the kit?
The two kits together I believe weighed around 20 kg, and I did save a little bit on the shipping price by ordering two kits (every little bit helps at these prices!)
So all told the total I paid was £221.80 (they took out VAT since I'm outside the EU), and the shipping component of that price was £91.12. I believe it would have been around £70 for just one kit, so it was worth it to double up since I'll use it up over the next year (keep one in storage while using the opened kit for ~6 months).
I also recently got some larger Jobo 2551 / 2561 tanks for my CPE2+, and plan on maximizing the film I process in each run. I figure it's around $5.50 - $6 / roll if I do that, so for me, compared to the $14 - $15 I would have to pay to get each roll developed locally, it is still worth it to import the kits.
Oh, as far as the 5L goes, yes, that means that the kit will make 5L of working solution (the chemicals themselves are in concentrate form).