Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
1989–90 Port Vale F.C. season
Table title:
Transfers in
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date from </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > From </th><th colspan=1 rowspan=1 > Fee </th><th colspan=1 rowspan=1 > Ref. </th></tr>
<tr> <td colspan=1 rowspan=1 > June 1989 </td><td class="highlighted"  colspan=1 rowspan=1 > FW </td><td colspan=1 rowspan=1 > England </td><td class="highlighted"  colspan=1 rowspan=1 > Nicky Cross </td><td class="highlighted"  colspan=1 rowspan=1 > Leicester City </td><td class="highlighted"  colspan=1 rowspan=1 > £125,000 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > June 1989 </td><td colspan=1 rowspan=1 > MF </td><td colspan=1 rowspan=1 > Scotland </td><td class="highlighted"  colspan=1 rowspan=1 > Ian Miller </td><td class="highlighted"  colspan=1 rowspan=1 > Blackburn Rovers </td><td class="highlighted"  colspan=1 rowspan=1 > Free transfer </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > July 1989 </td><td class="highlighted"  colspan=1 rowspan=1 > DF </td><td colspan=1 rowspan=1 > England </td><td class="highlighted"  colspan=1 rowspan=1 > Neil Aspin </td><td class="highlighted"  colspan=1 rowspan=1 > Leeds United </td><td class="highlighted"  colspan=1 rowspan=1 > £150,000 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > December 1989 </td><td colspan=1 rowspan=1 > DF </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Tim Parkin </td><td colspan=1 rowspan=1 > Swindon Town </td><td colspan=1 rowspan=1 > £60,000 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What was Port Vale's most expensive and least expensive transfer?
Answer:
The Port Vale F.C.'s most expensive transfer was defender Neil Aspin from Leeds United, who cost £150,000, and their least expensive was Ian Miller who was a free transfer from Blackburn Rovers.