I read your other thread on this topic as well.
Yes, it is a lot for a key [and you may well be able to find cheaper non genuine].
However........ if you think Suzuki is bad, DON'T buy a BMW
I spent about $6,000 in 12 months on basic maintenance and repairs on a 2k model R1150GS, then took it in for a check and service prior to a three state- 4600km road trip, they said I would need to spend between $5,000 to $6,000 in the coming 6-12 months with the projected problems it had.
I traded it in on a brand new 09 Wee and did the road trip on it, have not looked back, the Wee has been far the cheapest bike to own and maintain that I have had in decades [it is bike #16 and sits alongside an old '87 KLR650 which became bike #17 a year ago].
The Wee will have 60,000km [35,000 miles approx.] on it by the middle of this week.
So far it has had routine servicing, tyres, rear and front brake pads [one set of each- @ 48k and 53k respectively], counter shaft sprocket and chain @ 52k, rear sprocket looks like it will last until the chain and counter shaft sprocket need doing again.
And on a side note, I hid all my spare keys prior to going overseas back at Christmas time...... f#*ked if I can find where I put them since then though.
You will love the Strom, huge range of after market "farkles" and spare parts, great to ride and as cheap as chips to run.
In the scheme of bike ownership, the key cost is a minor issue and probably still as cheap or cheaper than most other bike brands in the same category as the Strom's are in for a replacement key.