There's a discount of Three Hundred Euros if you register for this year's TechEd Europe in the next three days. The event includes a pre-conference day on Monday 4th July, the main conference runs from Tuesday 5th to Friday the 8th July in Amsterdam. If you book your flights early too then you're likely to benefit from cheap flights too.
The registration site is available via this link. If you need to convince your manager that it's good value then remind them that you'll receive an entire week of intensive technical training from some of the best technical experts in the world. You'll have the opportunity to get answers to your most complex technical questions via the "ask the experts" area which will enable you to get one to one advice through out the week - you can spend as long as it takes and involve experts from multiple different technical areas to get to the answers you need.
I find that simply spending the week with my peers in other companies is very valuable as quite often one of them will have already solved the problems I'm working on - it's such a good opportunity to learn from each others experience.
I hope to see you there.