That's all fair comment. However, can anyone tell me what extras I get for two, three or even four thousand pounds more than I paid for my bike?
I have a Kalkhoff Pro-Connect (2008 vintage). The bike cost £1495. It has been totally reliable, requires very little in the way of maintenance, has the power to climb any hill that I have found in Derbyshire / The Peak District and the brake quality to stop me safely going down the hills. It is equally at home cruising at respectable road speeds and the bike has retained its, "new bike" looks.
I won't try to justify the extra, since that extra amount is the product of the law of diminishing returns. For example, my watch radio-linked to an atomic clock cost under £30 and has served me perfectly for some years now. A £10,000 Rolex would be no better as a timepiece, probably less accurate, but the Rolex has the image. When Ford launched the X type Jaguar after buying that company, it was in fact just the V6 Mondeo best model with some tweaked body panels, a changed rad grill and some varnished wood, but it cost a few thousand more than the cost of those differences.
Similar applies to e-bikes, but there are differences from your 2008 model such as many models being 36 volts rather than 26. Overall, firstly the high mode power is greater, secondly the power slope-off has almost gone, full power in any mode retained to over 14 mph. Thirdly the cadence dependence is greatly lessened, power retained at higher cadences than before. On the Impulse system, you can control what cadence you want to ride at for the full 15 mph assist speed, low medium or high to suit any type of cyclist.
The genuine Panasonic batteries are changed and have greater capacity, the 10 Ah now a 12, the 15 Ah now a 16, and of course there are the much larger capacity Kalkhoff-BMZ batteries for the Panasonic unit. The new Kalkhoff Impulse unit has wholly new Kalkhoff-BMZ batteries in 11 Ah or 15 Ah versions, both said good for a maximum of 1100 charges.
There are many more differences and improvements and I could go on at length, but you will have the picture. No, you won't get penny-for-penny moneysworth, but you will get greatly increased satisfaction from the gains.
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