Thank you for your question, my name is Steve and I am a fully qualified vehicle technician with over thirty years in the trade,, hopefully I can help you.
A replacement turbo is available for around £300 available from here and here There will also be a fitting charge if you need a garage to fit it for you and that will be around four hours labour, the average garage rate is £70 per hour so around £280 labour plus vat, the total job will be in the region £700 with oil and filter, so not a cheap job.
If the old turbo is not leaking oil or showing signs of wear there is reason to replace it, but if the turbo is showing wear and has movement in the shaft then it should be replaced as if it fails in operation it can cause major engine damage.
I hope this answers your question but do please feel free to ask any further details by replying to this thread.
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