I'll bite :-) In the US, healthcare costs for a family of 4 with constant/heavy utilization can be anywhere from $0 to about $30,000, mostly depending on income. The actual care received is comparable in any case.
Of course any analysis which only looks at personal spending on premiums and out-of-pocket expenses without also looking at tax rate and the percent of those taxes which also went to healthcare costs is, I think, fundamentally flawed. For example, "Healthcare should be free for everyone!" †To be funded by a new 10% income tax.
Finally, without also adjusting for public-sector healthcare R&D costs as well as cost shifting to countries more willing to subsidize private R&D, then... well, what exactly are we even comparing? ("Healthcare here is so cheap, we pay generic prices for all the latest wonder-drugs! So glad we benefit from all this great R&D everyone else is funding!")
In short, your data point tells me nothing about what people in NL are really "spending" on healthcare, as well as to what extent the "lower" costs of healthcare in NL could be a result of freeloading on other nation's R&D.