I'm going to be trying to split orders to get under the 135 limit for sure. The biggest issue is no knowing.
You just don't know what you are going to be paying.
Is it the ticket price of 200? Is vat going to be added? Is customs going to be added? Is a handling fee going to be added?
Is this item 200 or 300?
You still have to pay VAT, it's just either point of purchase or point of entry. The tariff is the only hard part, but you can still find out if there will be one. There are online calculators to help with this.
If you didn't pay VAT at point of purchase you should expect to pay it at point of entry + the admin fee of the delivery company.