Apple are expected to exceed shipments of the 3G iPhone by the end of the year – totalling 18 million, up from their expected 10 million. This shouldn’t come as a surprise, given the price difference between the original iPhone, and the 3G version. Add to that, it will sure sell by the bucketload in the UK, given that O2 will offer it without contract, on Pay As You Go, making it available to those who choose not to go for a contract. Not to mention it will be available in far more countries and network operators than the original iPhone. Given all of these factors, it wouldn’t be surprising if Apple to exceed their estimated shipments. Just look at the iconic Motorola Razr, when the price dropped to $200, up from the original $600 (with contract, $800 without), virtually everyone owned one, and it’s still selling today.